213451450 has 12 divisors (see below), whose sum is σ = 397019790. Its totient is φ = 85380560.

The previous prime is 213451421. The next prime is 213451471. The reversal of 213451450 is 54154312.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 173369889 + 40081561 = 13167^2 + 6331^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2134465 + ... + 2134564.

Almost surely, 2^213451450 is an apocalyptic number.

213451450 is a deficient number, since it is larger than the sum of its proper divisors (183568340).

213451450 is a wasteful number, since it uses less digits than its factorization.

213451450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4269041 (or 4269036 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 213451450 is about 14609.9777549454. The cubic root of 213451450 is about 597.6308893179.

The spelling of 213451450 in words is "two hundred thirteen million, four hundred fifty-one thousand, four hundred fifty".